Big bang cosmology faces unresolved problems with the standard ΛCDM model needing unknown fudge factors. A new timescape cosmology, where time passes faster or slower in voids and filaments of the cosmic web, may resolve the Dark Energy problem, but it indicates a need to rethink the foundations of cosmology.
Mathematicians from University College London and the University of California, Davis, have published a mathematical proof that the Universe’s accelerating expansion can be explained without dark energy, dealing a serious blow to the Lambda-cold dark matter model.
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